Toshiba GD-1210 Service Manual page 8

4.2 Description of Circuits.......................................................................................................... 4-3
4.2.1 Configuration ............................................................................................................ 4-3
4.2.2 Line path switching control circuit............................................................................. 4-5
4.2.3 Dial pulse generation circuit ..................................................................................... 4-7
4.2.4 Line current detection circuit .................................................................................... 4-9
4.2.5 CI detection circuit .................................................................................................. 4-11
4.2.6 Line monitor circuit ................................................................................................. 4-13
4.3 PC Boards ......................................................................................................................... 4-16
5. INSTALLATION ............................................................................................................ 5-1
5.1 Explanation to the Users...................................................................................................... 5-1
GD-1210/1250/1270/1160/1260
CONTENTS
© 2006 - 2011 TOSHIBA TEC CORPORATION All rights reserved
2